Grade 12th passModern Physics

Blocks A and B are connected by a bar of negligible weight. If mass of A and B are 170kg each and coefficient of limiting friction between blocks and plane are 0.2 and 0.4 for A and B. Calculate the force in the bar.

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Manjeet

7 Years agoGrade 12th pass

2 Answers

mahima pareek

7 Years ago

Is it 500 N along the plane. Approve if the answer is correct then I'll share the solution.

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mahima pareek

7 Years ago

We first calculate the net force downwards that is

m(A)gsin*theta* + m(B)gsin*theta*

Which is 1600N

Then calculate total limiting friction

That is m(A)gcos*theta*(0.2) + m(B)gcos*theta*(0.4) = 900 then calculate the net acceleration of the system

(1600-900)/170+170 = 700/340 m/s^2

After this draw FBD of block A and balance it

By. m(A)gsin*theta* - T(tension in bar) = m(A)*acceleration of the system

Your answer would be

T= 150 N

Approve if correct

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Blocks A and B are connected by a bar of negligible weight. If mass of A and B are 170kg each and coefficient of limiting friction between blocks and plane are 0.2 and 0.4 for A and B. Calculate the force in the bar.

Manjeet

2 Answers

mahima pareek

mahima pareek

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